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Images related to natural hazards.
Rockslide damage to the Golden Gate area near Mammoth Hot Springs, Yellowstone National Park, as a result of the 1959 Hebgen Lake earthquake.
Rockslide damage to the Golden Gate area near Mammoth Hot Springs, Yellowstone National Park, as a result of the 1959 Hebgen Lake earthquake.
Seismic geyser in eruption in 1970. Photo by John Brandow.
Seismic geyser in eruption in 1970. Photo by John Brandow.
Hebgen Lake fault scarp in 1959. USGS photo by J. R. Stacy.
Hebgen Lake fault scarp in 1959. USGS photo by J. R. Stacy.
Map of moderate, high and very high threat volcanoes monitored by the California
Map of moderate, high and very high threat volcanoes monitored by the California
A close-up of the active fumarole field on the north wall of the pit.
A close-up of the active fumarole field on the north wall of the pit.
The weather was warm and sunny during a routine visit to the Halema‘uma‘u webcam. No significant changes were observed, and no rockfalls were heard.
The weather was warm and sunny during a routine visit to the Halema‘uma‘u webcam. No significant changes were observed, and no rockfalls were heard.
SPMSC scientist Lauren Toth conducts a photographic survey of Porter Patch reef off Key Largo, one of the sites that has been surveyed as part of FWRI’s Coral Reef Ecosystem Monitoring project since 1996.
SPMSC scientist Lauren Toth conducts a photographic survey of Porter Patch reef off Key Largo, one of the sites that has been surveyed as part of FWRI’s Coral Reef Ecosystem Monitoring project since 1996.
As the sun rose above Mauna Kea (background) on July 6, 1975, eruptive fissures along the Northeast Rift Zone of Mauna Loa fed voluminous ‘a‘ā lava flows that quickly moved down the north flank of the volcano. USGS photo by D. Peterson.
As the sun rose above Mauna Kea (background) on July 6, 1975, eruptive fissures along the Northeast Rift Zone of Mauna Loa fed voluminous ‘a‘ā lava flows that quickly moved down the north flank of the volcano. USGS photo by D. Peterson.
Webicorder for PNSN TDH seismometer located on the southwestern flank of Mount H
Webicorder for PNSN TDH seismometer located on the southwestern flank of Mount H
Low-altitude aerial photograph of Plum Island, Massachusetts, , from USGS field activity 2019-009-FA.
Low-altitude aerial photograph of Plum Island, Massachusetts, , from USGS field activity 2019-009-FA.
Schematic model showing a cross section of Old Faithful's plumbing system as determined from seismic studies. The red circles (t0-t3) show the location of the tremor source over time, and how the tremor source migrates upward prior to an Old Faithful eruption. Times between red circles are based on a 93-minute eruption interval.
Schematic model showing a cross section of Old Faithful's plumbing system as determined from seismic studies. The red circles (t0-t3) show the location of the tremor source over time, and how the tremor source migrates upward prior to an Old Faithful eruption. Times between red circles are based on a 93-minute eruption interval.
Graphic shows the earthquake swarm from June-July, 2019, compared to previous swarms detected in March 2019, 2017, 2016, and in 2014. The activity is likely the result of small-scale underground movements of hydrothermal fluids or gas — a sign that Mount St. Helens remains an active volcano.
Graphic shows the earthquake swarm from June-July, 2019, compared to previous swarms detected in March 2019, 2017, 2016, and in 2014. The activity is likely the result of small-scale underground movements of hydrothermal fluids or gas — a sign that Mount St. Helens remains an active volcano.
What does a hardened lava flow look like? This photograph is of the frothy top of a lava flow near the fissure 8 vent, on Kīlauea Volcano's lower East Rift Zone. The different sizes and abundance of bubbles in the surface texture create different colors of the lava, including the light brown and darker black near the boot (for scale).
What does a hardened lava flow look like? This photograph is of the frothy top of a lava flow near the fissure 8 vent, on Kīlauea Volcano's lower East Rift Zone. The different sizes and abundance of bubbles in the surface texture create different colors of the lava, including the light brown and darker black near the boot (for scale).
USGS photographs taken from a contracted small airplane are used to build three-dimensional representations of the hillslopes of Big Sur, California, as shown here for the Mud Creek landslide site in 2017. Blue symbols show the locations of individual photos obtained on the flight, and the gray area shows the hillslope landscape created from the photos using S
USGS photographs taken from a contracted small airplane are used to build three-dimensional representations of the hillslopes of Big Sur, California, as shown here for the Mud Creek landslide site in 2017. Blue symbols show the locations of individual photos obtained on the flight, and the gray area shows the hillslope landscape created from the photos using S
Computer images showing the coastal cliff area of Mud Creek on the Big Sur coastline, central California, where on May 20, 2017 a catastrophic landslide destroyed over 400 meters of scenic California State Highway 1. These illustrations show the changes to the digital surface models of Mud Creek during the three primary phases of the landslide: (
Computer images showing the coastal cliff area of Mud Creek on the Big Sur coastline, central California, where on May 20, 2017 a catastrophic landslide destroyed over 400 meters of scenic California State Highway 1. These illustrations show the changes to the digital surface models of Mud Creek during the three primary phases of the landslide: (
Native sulfur crystals precipitate at Sulphur Banks via a chemical reaction between different sulfur-bearing volcanic gases. USGS image by P. Nadeau.
Native sulfur crystals precipitate at Sulphur Banks via a chemical reaction between different sulfur-bearing volcanic gases. USGS image by P. Nadeau.
HVO gas geochemists periodically collect gas samples at Sulphur Banks, near the Kīlauea Visitor Center, in Hawai‘i Volcanoes National Park. Samples are analyzed for bulk chemistry and for helium isotopes. The results are compared to previous measurements to evaluate potential changes in activity at the volcano.
HVO gas geochemists periodically collect gas samples at Sulphur Banks, near the Kīlauea Visitor Center, in Hawai‘i Volcanoes National Park. Samples are analyzed for bulk chemistry and for helium isotopes. The results are compared to previous measurements to evaluate potential changes in activity at the volcano.
An HVO geologist removes the sampling tube following the gas collection. Inserting the tube down into the degassing source limits contamination of the volcanic gas sample by atmospheric gases. USGS image by P. Nadeau.
An HVO geologist removes the sampling tube following the gas collection. Inserting the tube down into the degassing source limits contamination of the volcanic gas sample by atmospheric gases. USGS image by P. Nadeau.
COSMO-SkyMed (CSK) Interferogram for the period from April 6 to June 2, 2019, covering Kīlauea Volcano's summit region. Each color fringe represents 1.65 centimeters (0.65 inches) of ground displacement.
COSMO-SkyMed (CSK) Interferogram for the period from April 6 to June 2, 2019, covering Kīlauea Volcano's summit region. Each color fringe represents 1.65 centimeters (0.65 inches) of ground displacement.
Map showing the surficial geology from this study and Baldwin and others (2016) with equivalent onshore geology (adapted from Stone and DiGiacomo-Cohen, 2009). The areal extents over which offshore subsurface geologic units crop out at the sea floor were interpreted from seismic-reflection data.
Map showing the surficial geology from this study and Baldwin and others (2016) with equivalent onshore geology (adapted from Stone and DiGiacomo-Cohen, 2009). The areal extents over which offshore subsurface geologic units crop out at the sea floor were interpreted from seismic-reflection data.
Montana State University students at an outcrop along Highway 20, in Idaho, sampling the Mesa Falls Tuff fall deposit exposed just beneath the ignimbrite. Photo by Madison Myers (Montana State University) on June 9, 2019.
Montana State University students at an outcrop along Highway 20, in Idaho, sampling the Mesa Falls Tuff fall deposit exposed just beneath the ignimbrite. Photo by Madison Myers (Montana State University) on June 9, 2019.